Suomenlinna, or Sveaborg, is a sea fortress composed of eight islands, of which six have been fortified. Located about four kilometres (2.5 mi) southeast of the city center of Helsinki, Finland, Suomenlinna is a popular destination for both tourists and locals, who enjoy it as a picturesque picnic site.
Key Facts
| Subject | Suomenlinna |
| Category | Sea fortress by Helsinki, Finland |
| Reading time | 1 min · Intermediate |
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Reference material for this entry is drawn from the open encyclopedic record, including Wikipedia , available under the CC BY-SA 4.0 license. Images are credited individually beside each photo.